mirror of
https://github.com/jart/cosmopolitan.git
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70 lines
2.8 KiB
C
70 lines
2.8 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2022 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/pledge.internal.h"
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#include "libc/macros.internal.h"
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#include "libc/str/str.h"
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#ifdef __x86_64__
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static int FindPromise(const char *name) {
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int i;
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for (i = 0; i < ARRAYLEN(kPledge); ++i) {
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if (!strcasecmp(name, kPledge[i].name)) {
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return i;
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}
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}
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return -1;
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}
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/**
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* Parses the arguments to pledge() into a bitmask.
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*
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* @return 0 on success, or -1 if invalid
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*/
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int ParsePromises(const char *promises, unsigned long *out) {
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int rc = 0;
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int promise;
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unsigned long ipromises;
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char *tok, *state, *start, buf[256];
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if (promises) {
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ipromises = -1;
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if (memccpy(buf, promises, 0, sizeof(buf))) {
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start = buf;
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while ((tok = strtok_r(start, " \t\r\n", &state))) {
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if ((promise = FindPromise(tok)) != -1) {
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ipromises &= ~(1ULL << promise);
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} else {
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rc = -1;
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break;
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}
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start = 0;
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}
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} else {
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rc = -1;
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}
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} else {
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ipromises = 0;
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}
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if (!rc) {
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*out = ipromises;
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}
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return rc;
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}
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#endif /* __x86_64__ */
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